Username and password flags not working correctly when using `--endpoint`

[merlijn-sebrechts]

When using --endpoint, the --username and --password flags stop working.

So while this works

wsman --endpoint "https://$USERNAME:$PASSWORD@$IP:16993" --noverifypeer --noverifyhost --optimize --encoding utf-8 enumerate "http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_AssociatedPowerManagementService" -d 6

This does not work

wsman --endpoint "https://$IP:16993" -u "$USERNAME" -p "$PASSWORD" --auth=digest --noverifypeer --noverifyhost --optimize --encoding utf-8 enumerate "http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_AssociatedPowerManagementService"